KR101221156B1 - Induced answering method and system for circuit switching-based telephony - Google Patents

Abstract

The present invention relates to an introduction response method and system for a CS-based telephone. For communication via the telecommunications network 3, the user terminal 5 is configured to at least the CS-telephone device CS0 to process the CS-based telephone signals CS1, CS2 received and transmitted via the circuit switched bearer service. Include. The user terminal is arranged to receive an additional response-related signal PS1 (CS3) related to the introduction CS-warning signal CS1 of the introduction call. In addition, the user terminal is arranged to transmit a response signal or CS-response signal CS2 via the circuit switched bearer service in response to the information contained in or derived from the additional response-related signal.

CS-based telephone, circuit switched bearer service, introduction CS-warning signal, answer-related signal, user terminal

Description

Inductive response method for circuit-switched phones {INDUCED ANSWERING METHOD AND SYSTEM FOR CIRCUIT SWITCHING-BASED TELEPHONY}

The invention relates to a user terminal as defined in claim 1. The invention also relates to a method for responding to a CS-based telephone. In addition, the present invention relates to a network exchange (or network service or application server) and a call-initiating terminal.

The invention also relates to a computer program for a user terminal.

In circuit-swiched (CS) phones, call setup between parties involves several steps. The call is initiated by the first party A which dials on its A-terminal to the telephone number of the B-terminal of the second party B. The telephone network then routes the call to the B-terminal by using the information of the dialed telephone number. The call is then known to the party B by the signal generated on the B-terminal. The B-party may then answer the call by some interaction with the B-terminal. The B-terminal signals the network on which the call is allowed. After the response generated by the B-terminal, the call is connected between the A-terminal and the B-terminal, and the voice communication between the parties A and B is established.

This call setup is implemented in both wired and mobile networks. Both A- and B-terminals can be wired or mobile telephones.

From the prior art, specifications are known for mobile CS-telephones which describe a series of states of the finite state machine (FSM) of the telephone apparatus during call setup, processing and termination (GSM TS04.07 version 7.3.0). , Chapter 6.2). 1 shows a part of a CS-calling state diagram 1 from the prior art.

The finite state machine of the telephone (B-terminal) can be in several different states. Generally, when the phone is idle and not in communication, the state of the phone is a "null" state 10.

The call request can be received by the A-terminal as an introduction signal from the network. Due to this signal, the finite state machine changes its state to the "receive call" state 20. The finite state machine arrives at the “call reception” state 20 via some intermediate state (s) 15. In this state, the user (B party) of the B-terminal is notified of the introduction signal. Due to a user generated answer, such as pressing the "OK" key on the B-terminal's keypad, the finite state machine changes to the active state 30, where the party A of the A-terminal And voice communication between the party B of the B-terminal. The response generated by the user to the introduction signal is schematically represented by block A1 and is connected by a dashed arrow to the "call reception state" 20.

The finite state machine reaches the "active" state 30 via the intermediate state 25. At the same time, the CS-call response signal is returned to the switching center to establish the voice communication phase.

At the end of the call, the finite state machine is changed to "null" state 10 via some additional intermediate state (s) 35, if possible. At the same time, the end of the call is indicated by the switching center.

In the prior art, the party B needs to activate the B-terminal by performing some processing of the B-terminal, for example, by pressing a certain "OK" button on the terminal.

The above-described method for responding to an introductory call has the disadvantage of limiting the usefulness and functionality of the telephone, i.

An object of the present invention is to provide a terminal with improved response performance in view of the prior art.

To solve this object, the present invention provides a user terminal for communication over a telecommunications network comprising at least a CS-telephone device for processing CS-based telephone signals, wherein the CS-based telephone signals are circuit switched. Received and transmitted via a circuit switched bearer service; The user terminal is arranged to receive an additional response-related signal associated with an introduction CS-warning signal of the introduction signal; The user terminal is arranged to transmit a response signal or CS-response signal via a circuit switched bearer service in response to information included in or derived from the additional response-related signal.

Advantageously, the present invention offers the possibility of automatically responding to an introduction signal on a user terminal, which does not require user interaction.

The invention also relates to network services on a telecommunications network comprising at least circuit switched bearer services for receiving and transmitting CS-based telephone signals; The circuit switched bearer service is arranged to send a CS-warning signal of the introduction signal to the user terminal, the network service is arranged to send an additional response-related signal related to the CS-warning signal of the introduction call to the user terminal, The user terminal is arranged to provide a response signal or CS-response signal via a circuit switched bearer service.

Furthermore, the present invention relates to a call initiation terminal or A-terminal for communication via a telecommunications network comprising a CS-telephone device for processing CS-based telephone signals received and transmitted via circuit switched bearer service, The call initiation terminal is arranged to transmit an additional response related signal related to the CS-call setup signal sent for an outgoing call with the user terminal, the additional response-related signal including information on the outgoing call. The receiving user terminal provides a response signal or a CS-response signal through a circuit switched bearer service.

Furthermore, the present invention relates to a method of communication via a telecommunications network:

Processing the CS-based telephone signal received and transmitted via the circuit switched bearer service;

Receiving an additional response-related signal related to the introduction CS-warning signal of the introduction call; And

Sending a response signal or a CS-response signal via a circuit switched bearer service in response to information included in or derived from the additional response-related signal.

The invention also relates to a computer program for a user terminal for communicating via a telecommunications network (3), said user terminal comprising at least a CS-phone apparatus for processing CS-based telephone signals, said CS- The base telephone signal is received and transmitted via circuit switched bearer service; Wherein the user terminal also comprises a processing unit and a memory, the memory is associated with the processing unit, and after the computer program is loaded, the processing unit has the following functions:

A function of receiving an additional response-related signal related to the introduction CS-warning signal of the introduction call;

To control the ability to send a response signal or CS-response signal via a circuit switched bearer service in response to information included in or derived from the additional response-related signal.

The invention will be described in detail below with reference to several drawings in which exemplary embodiments of the invention are shown. It will be apparent to those skilled in the art that other alternatives and equivalent embodiments of the invention are contemplated to be practiced without departing from the precise scope of the invention and that the scope of the invention is limited only by the appended claims.

In all cases, drawing entities having the same reference number relate to the same entity shown in the other figures.

1 shows part of a prior art CS-call state diagram;

2 is a schematic diagram of a response procedure in a terminal of the prior art;

3 is a schematic diagram of a terminal capable of using the response method according to the present invention;

4 is a CS-calling state diagram in accordance with the present invention;

5 shows a signal flow according to the response method of the present invention;

Figure 6 illustrates an additional signal flow in accordance with the response method of the present invention;

7A, 7B, and 7C illustrate additional signal flows in accordance with the response method of the present invention;

8 is a signaling diagram of an additional embodiment of the response method of the present invention; And

9 is a CS-call state diagram in an additional embodiment of the response method of the present invention.

2 schematically shows a response procedure in a terminal 2 of the prior art.

Terminal 2 is typically a mobile phone but may also be a landline phone. The terminal 2 is arranged for communication via the telecommunications network 3.

The terminal 2 as an electronic device comprises a CS-phone device CS0 arranged to process CS-based telephone signals. CS-based telephone signals may be implemented by the DTAP protocol (Direct Transfer Application Part), for example, as used in Global System for Mobile communications (GSM). In addition, the terminal 2 may include an additional device D0 that provides a graphical user interface (GUI) and can be arranged to provide execution of one or more applications that are not essential but can be executed locally within the GUI. have. The additional device D0 typically includes a memory for storing data and / or applications.

In the CS-phone apparatus CS0, there is a finite state machine (FSM) capable of managing CS-based telephone functions.

The response procedure shown for the terminal 2 corresponds to the CS-calling state diagram of FIG.
A warning signal CS1 is provided from the network 3 to the terminal 2 to indicate a call request for an incoming call. As described above with reference to Figure 1, a finite state machine (FSM) provides a user of terminal 2 with notification of an introduction call.

The user responds with an action described herein as action signal A1, such as pressing an "OK" button.

The signal A1 by user action is provided to the finite state machine FSM. The finite state machine FSM now prepares for voice communication in the "active" state 30 by the allow signal A2. At the same time, a CS-based response signal CS2 is sent to the network 3 so that the call is answered indicating that voice communication 7 with the call initiating terminal or A-terminal (not shown) is started.

3 shows a user terminal 5 according to the invention.

In Fig. 3, an entity with the same reference number relates to the same entity as shown in the figure.

In the present invention, when the additional packet switched signal PS1 of the packet circuit switched network source (on the network 3) is provided to the user terminal 5 of the present invention in relation to the CS warning signal CS1, the user terminal. It is recognized by (5) that an automatic response can be provided.

The user terminal 5 of the present invention comprises an electronic circuit element in which the CS-telephone apparatus CS0 and the packet switched data processing apparatus PS0 exist. The devices CS0, PSO are schematically illustrated in dotted rectangles. In addition, the user terminal 5 may comprise an additional device D0 which may be provided to provide an application related to the GUI and the (locally executable) GUI, as described above.

The packet switched signal PS1 is implemented by, for example, the Internet Protocol (IP).

The finite state machine FSM is located in the CS-telephone device CS0.

In the packet switched data processing apparatus PS0, a processing application HA is located for processing a packet switched signal. In addition, a storage device or memory MP for storing data relating to the additional packet switched signal PS1 may be located in the packet switched data processing apparatus PS0.

The processing application HA has an output at the connection 40 to the finite state machine FSM for transmitting an information signal from the processing application HA to the finite state machine FSM. The processing application may derive information from the additional packet switched signal PS1. This information signal comprises at least a response control signal ACS.

The finite state machine FSM may change its state with respect to the response control signal ACS received from the processing application HA, as described in detail below.

The network service (or network application service) NS on the network 3 may combine the CS alert signal CS1 with the additional packet switched signal PS1 and provide it to the user terminal 5.

Within the network 3, the signals CS1, PS1 are transmitted via their respective bearer service. The CS-alert signal CS1 is transmitted via the first circuit-switched bearer service. The packet switched signal PS1 is transmitted via a second packet-switched based bearer service.

The CS warning signal CS1 is directed to the CS-phone apparatus CS0. The CS warning signal CS1 will interact with the finite state machine FSM as described above with reference to FIGS. 1 and 2. The finite state machine FSM will change its state (if not on a call) to the call receive state 20.

The finite state machine FSM is arranged to expect an additional packet switched signal PS1 in association with the reception of the CS-warning signal CS1. In one embodiment, the finite state machine FSM derives from the CS-alert signal CS1 that this additional packet switched signal PS1 is expected. For example, this may be based on modification of the received Caller Line Identity signal or CS-Alert signal CS1. The modification of the received caller line identity signal or CS-alert signal CS1 may be carried out by the memory to determine whether the CS-alert signal is related to the associated network service and whether the associated additional packet switched signal PS1 can be expected. Some data stored in MP) can be compared. In another embodiment, the finite state machine FSM may be arranged to expect to receive the associated additional packet switched signal PS1 within a predetermined time interval (determined). While expecting an additional packet switched signal PS1, the finite state machine FSM may be arranged to delay the generation of an alarm (audible, visible or touchable) for the user. The predetermined time interval may cause the CS-warning signal CS1 and the packet switched signal PS1 to be received at the user terminal 5 substantially simultaneously.

Further, the packet switched signal PS1 arrives before the CS-warning signal CS1, but is preferably suspended until the arrival of the corresponding CS-warning signal CS1.

After reception, the additional packet switched signal PS1 is directed to the processing application HA in the packet switched data processing apparatus PS0. The additional packet switched signal PS1 contains at least response-related data relating to the "in progress" CS warning signal CS1. The processing application HA is arranged to determine from the response-related data in the packet switched signal PS1 whether or not the network service requests an automatic response by the user terminal 5 to be executed.

If an automatic response is requested, the processing application HA may provide a response control signal ACS via the connection 40 to the finite state machine FSM.

Upon receipt of the response control signal ACS, the finite state machine FSM changes its state by transitioning from the "receive call" state 20 to the "active" state 30 via the intermediate state 25.

As a result, the user terminal 5 provides the network 3 with the CS-response signal CS2 to which the pending call is answered. Voice communication 7 may be initiated.

In the same way as described above, an additional packet switched signal PS1 provides a network induction response for the CS-phone based device CS0.

In accordance with the present invention, the transition from the " call " state 20 to the " active " state 30 is triggered by a network induction response (provided by the additional packet switched signal PS1) or by the user terminal. Triggered by the call permission by the mobile end user of 5.

The result of the established call may be as described above with reference to FIGS. 1 and 2.

4 shows a CS-calling state diagram 4 for a finite state machine of the user terminal 5 according to the invention.

Additionally, the finite state machine (FSM) of the user terminal 5 is very similar to the conventional finite state machine, except that the finite state machine (FSM) can tolerate the underlying ACS in the CS-calling state. The underlying ACS is derived from the response control signal ACS generated by the processing application HA. The underlying ACS may affect the finite state machine (FSM) to change state from the "receive call" state 20 to the "active" state 30 (dashed line).

The determining step by the processing application HA in which the automatic response is executed by the user terminal 5 needs to correlate the CS-warning signal CS1 and the additional packet switched signal PS1 in various ways. For example, the additional packet switched signal PS1 is typically the CS-warning signal CS1, such as the calling line identity (CLI) of the party A contained in the CS-warning signal CS1. It may include data about. In addition, the CS-warning signal CS1 may include some data to indicate that an additional packet switched signal PS1 will be transmitted in the future.

In addition, from the additional packet switched signal PS1, the processing application can obtain the identification of the network service NS which transmits the combined CS-warning signal CS1 and the additional packet switched signal PS1.

Additionally, from the additional packet switched signal PS1, the processing application may derive authentication information for the network service NS, which causes the processing application HA to confirm the authentication of the network service NS. . In this way, the user of the user terminal 5 can be assured of the identity of the network service 3.

Finally, the data of the additional packet switched signal PS1 may include additional information indicating the "reason" that the network service NS requests a call to be automatically answered by the user terminal 5.

The information contained in the signal PS1 for at least one of identification, authentication and " reason " causes the processing application HA to apply the service filter FL, which is automatically answered by the network service. Is allowed.

The service filter FL comprises data related to the above-mentioned information in the additional packet switched signal PS1 for the purpose of authentication of the network service NS which transmits or generates the identification and / or signal PS1.

The service filter FL can be user-limited, for example, by a (possibly GUI-based) application on the user terminal 5. He / she may use the user application to define one or more network services (NS) that cause the user terminal 5 to automatically answer the introduction call. The application can define a service that filters data that can be accessed by the processing application HA for use during the process of determining whether an automatic response can be generated for the invocation call. Services that filter data are typically stored in memory associated with the service filter FL.

In one embodiment, the user terminal 5 is arranged to automatically process both the CS-warning signal CS1 and the additional packet switched signal PS1 without notifying the user about the introduction message (ie silent alert). Pattern). Performing such processing can be done by using applications for mobile terminals, such as, for example, SIM Application Toolkit (SAT) and MExE. The processing application HA can use an application programming interface such as J2ME. However, one skilled in the art will recognize that alternative protocols and programming environments may equally fit.

Based on the actual characteristics of the introduction call (and its reliability), the present invention provides a CS-warning signal CS1 and an additional packet switched signal PS1 to be generated by the network service NS or the A-party of the A-party. Can be combined.

5 shows a signal flow according to the response method of the present invention.

In this embodiment, the combination of the CS-warning signal CS1 and the additional packet switched signal PS1 is generated by the network service NS on the network 3.

The call setup is initiated by the A-terminal 6, which sends a CS-warning signal (or generally a CS-call setup) CS1 to the network 3. In network 3, network service NS2 generates an additional packet switched signal PS1, which is combined with CS-warning signal CS1 to user terminal 5 (or B-terminal not shown in detail). Is sent to. As described above, the CS-alert signal CS1 through which the silent warning pattern is transmitted to the user terminal 5 may be changed.

As described above, the user terminal 5 will generate an automatic response (CS response CS2) based on the information received in the combination of the CS-alert signal CS1 and the additional packet switched signal PS1. The CS response CS2 is sent to the network 3 and the A-terminal 6 to establish the voice communication 7.

6 shows an additional signal flow according to the response method of the present invention.

In this embodiment, the combination of the CS-warning signal CS1 and the additional packet switched signal PS1 is generated by the A-terminal 6.

The CS-warning signal CS1 and the additional packet switched signal PS1 are both generated by the A-terminal 6 and transmitted via the network 3 to the user terminal 5. In this case the network 3 is considered transparent to both CS1 and PS1 signals. It is noted that the CS-warning signal CS1 or CS-call-setting generated by the A-terminal 6 may include a silent warning pattern.

As described above, the user terminal 5 may generate an automatic response (by the CS response CS2) based on the information received by the combination of the CS-alert signal CS1 and the additional packet switched signal PS1. will be. The CS response CS2 is sent to the network 3 and the A-terminal 6 to establish the voice communication 7.

7A, 7B and 7C illustrate additional signal flows in accordance with the response method of the present invention.

In the embodiment of FIG. 7A, the user terminal 5 receives an introduction call with the CS-alert signal CS1 in combination with an additional circuit switched signal CS3 from the network service NS on the network 3.

The network service NS generates a CS-warning signal CS1 and additionally a network guidance response signal CS3.

The network-derived response signal CS3 is a signal in the CS-domain.

The CS warning signal CS1 is directed to the CS-phone apparatus CS0. The CS warning signal CS1 will interact with the finite state machine FSM as described above with reference to FIGS. 1 and 2. The finite state machine (FSM) will change its state (if not on a call) to the "receive call" state 20.

The finite state machine FSM is arranged to expect an additional circuit switched signal CS3 with respect to the reception of the CS-alert signal CS1. The finite state machine FSM is derived from the CS-warning signal CS1 and arranged such that an additional network-derived response signal such as CS3 is expected.

Although expecting an additional circuit switched signal CS3, the finite state machine FSM does not allow the additional circuit switched signal (or network-derived response signal) CS3 to be received for a predetermined time interval at which the user terminal 5 can be received. Can be arranged to delay the generation of an alarm (which can be heard, seen or touched).

Further, the additional circuit switched signal CS3 arrives before the CS-warning signal CS1, but is preferably suspended until the arrival of the corresponding CS-warning signal CS1.

After reception, the additional circuit switched signal CS3 is also directed to the finite state machine FSM. The additional circuit switched signal CS3 may comprise at least response-related data relating to the “in progress” CS warning signal CS1.

The finite state machine FSM may be arranged to determine from the additional circuit switched signal CS3 whether the network service requires an automatic response by the user terminal 5 to be executed.

If an automatic response is requested, the finite state machine (FSM) changes its state by transitioning from the "receive call" state 20 to the "active" state 30 via the intermediate state (s) 25, and CS Send a response to the network 3 (network service NS).

Thereafter, voice communication 7 can be initiated.

In the embodiment of FIG. 7A, the user terminal 5 receives an introduction call with the CS-alert signal CS1 in combination with an additional circuit switched signal CS3 from the network service NS on the network 3.

The network service NS generates a CS-alert signal CS1 and additionally an additional circuit switched signal CS3, both of which can be transmitted via a circuit switched bearer service.

In the embodiment of Fig. 7B, the user terminal 5 receives an incoming call with a CS-warning signal CS1 in combination with an additional circuit switched signal CS3 from the call initiating A-terminal 6.

The A-terminal 6 initiating the introduction call to the user terminal 5 generates both a CS-warning signal CS1 and an additional circuit switched signal CS3 via the circuit switched bearer service.

In this case the network 3 appears to be transparent to both CS1 and CS3. It is noted that the CS-warning signal CS1 or CS-call-setting generated by the A-terminal 6 may include a silent warning pattern.

As also described above with reference to FIG. 7A, the finite state machine FSM is arranged to determine from the network-derived response signal CS3 whether the network service requests an automatic response by the user terminal 5 to be executed. .

If so, the finite state machine can change its state by translating from the "receive call" state 20 to the "active" state 30 via the intermediate state (s) 25, and the CS response (CS2) Can be sent to the network 3 (and A-terminal 6). Thereafter, voice communication can be initiated between the A-terminal 6 and the user terminal 5.

In the embodiment of Fig. 7c, the user terminal 5 receives an introduction call with the CS-alert signal CS1 in combination with an additional packet switched signal PS1 comprising the invitation signal IS1.

An additional packet switched signal PS1 via the packet switched bearer service may be generated by the network service NS or the call initiation A-terminal 6, as described above with reference to FIGS. 5 and 6 respectively.

The processing application HA is arranged to extract the invitation signal IS1 from the additional packet switched signal PS1 and send the invitation signal IS1 to the additional device DO. The additional device D0 is arranged to process the invitation signal IS1 by some GUI-based application, which now presents information related to the introduction call to the user. After receiving the feedback signal FS for this information from the user, the user terminal transmits the feedback signal SF (information related) in the packet switched format back to the network service NS via the PS bearer service.

The network service NS is arranged to recognize the feedback signal from the user terminal 5. Accordingly, the network service NS now responds by sending an induced CS-response signal CS3 to the user terminal via the circuit switched bearer service, thereby including the invitation signal IS1, and the user with the packet switched signal PS1. Notify the CS-phone based device CS0 about the action. The finite state machine (FSM) receives the network-derived CS-response (CS3) and changes their state to the "active" state 30. Thus, the CS-phone based device CS0 sends the CS response CS2 to the network 3 (network service NS and / or A-terminal 6).

If necessary, the voice communication 7 can now be established.

Figure 8 shows a signaling diagram for an additional embodiment of the response method of the present invention.

In this embodiment similar to the embodiment shown in FIG. 5, the combination of the CS-warning signal CS1 and the additional packet switched signal PS1 is generated on the network 3.

Call-setting is initiated by the A-terminal 6, which sends a CS-warning signal CS1 to the network. In the network 3, the network service NS generates an additional packet switched signal PS1 via a packet switched bearer service, which is combined with the CS-alert signal CS1 (or shown in detail). Is sent to the B-terminal 5. As described above, the CS-alert signal CS1 through which the silent warning pattern is sent to the user terminal 5 may be changed.

The additional packet switched signal PS1 comprises a ring-delay signal RS containing information on a number of rings or at time intervals before the automatic CS-response CS2 is transmitted to the network 3. The processing application HA processes the additional packet switched signal PS1 and extracts the ring-delay signal RS information. Through connection 40, the processing application HA sends the ring-delay signal RS (information about) to the finite state machine (FSM), which shows how many (or when) rings from the received ring information. It is later determined whether to change from the "call reception" state 20 to the "active" state 30 or to transmit the CS-response signal CS2 to the network 3.

As described above, the CS-response CS2 is sent to the network 3 and the A-terminal 6 to establish the voice communication 7.

9 shows a CS-call state diagram in an additional embodiment of the response method of the present invention.

In this embodiment of the present invention, the user terminal 5 provides the privilege for the A-terminal 6 to join the conversation during the first other ongoing call possible between the user terminal 5 and the other A-terminal. In this situation, the present invention may provide for "(network-induced) forced call hold".

The principle of "call hold" is described in GSM TS 04.83 v.7.0.1 of GSM TS 04.83 describing the status for "call hold". This is described in Chapter 2.1.5. The "call hold" state is considered herein as an auxiliary state, which is part of the general "active" state 30.

The privileged A-terminal 6 sets up the call to the user terminal 5 and includes a "force call hold" command in the call setup, or the network service NS is privileged A-terminal 6 You can provide an "force hold command" instead. This "force call hold" instruction is transported as an additional packet switched signal PS1 via the bearer service in the PS domain. This "force call hold" instruction, when received by the user terminal 5, has the effect of the processing application HA providing a hold signal or holding the underlying HS to the finite state machine FSM over the connection 40. Can have

To the actual state of the user terminal 5 when the invocation of the privileged A-terminal enters the "null" state 10 (= idle) or the "active" state 30 (= busy). Accordingly, the finite state machine FSM may interpret the hold signal HS differently.

During the "null" state 10, the finite state machine FSM will change its state to the "receive call" state 20 (as described above) and can ignore the "hold" signal (in this case The invocation call can be handled by the party B as a general call from the prior art). Alternatively, in accordance with one or more embodiments as described above, the finite state machine (FSM) may interpret the "hold" signal (HS) as a network derivation command that automatically responds to an introduction call, and the "active" state. It may be changed to 30.

However, when the hold signal exits the finite state machine (FSM) during the "active" state of the first other call, the finite state machine (FSM) changes the state for the first other active call to the "hold" state 45. (As indicated by arrow H1) and arranged to change the state of the introductory call from the privileged A-terminal to the " active " state (arrow H2).

After the end of the call from the privileged A-terminal 6, the finite state machine restores its state to the previous state: in the "hold" state, the first other call being "hold" is detected and If it is restored to the "active" state (arrow H3), or if no other call exists, the state changes to the "null" state.

Transfer of another call (H1) from "active" state 30 to "hold" state 45 and resave (H3) of another call from "hold" state 45 to "active" state 30 Note that it can be performed according to the GSM TS 04.83 specification by itself. The additional packet switched signal PS1 (network-derived signal) according to the present invention instructs the user terminal 5 to perform one of two operations H1 and H3.

Insertion of the "force call hold" can be done manually by the party A. Alternatively, including "force call hold" may be done automatically by the A-terminal 6 by some recognition procedure for the B-number of the user terminal 5.

For example, an indication for the B-number of the user terminal 5 and the application of the "force call hold" for the B-number can be stored in the memory of the A-terminal. When the B-number of the user terminal 5 is called, the A-terminal can use the data stored in the memory to automatically send a "force call hold" command.

In addition, additional information (of the "force call hold" command) in the additional packet switched signal PS1 must be presented to the other A-terminal in the user terminal 5 and / or the first other call (listed via the speaker). Can include a reference to an announcement (as seen on the display of an individual terminal).

For example, the party of another A-terminal to be placed in the "hold" state may receive the appropriate announcement and automatically connect with the party of the privileged A-terminal 5 to the user-terminal 5 Party B may receive the appropriate announcement. Such announcement may be different from other announcements. The announcement may be provided by the network service NS in response to the announcement signal from the user terminal 5 in the PS domain.

The additional information of the additional packet switched signal PS1 also indicates that the network-induced "force call hold" must occur after a predetermined number of rings (e.g., three rings). Can be represented. This causes party B to answer the phone on its own, instead of being “answered”.

A network-derived "call hold" may be a good extension for an application that provides content spoken during route navigation through a mobile phone during driving. When the driver expects route information (eg, "next exit on the freeway"), he expects to receive this information when he is on the phone conversation. Thus, the said route information should automatically hold the ongoing conversation and, if possible, play the announcement (s) and disconnect and restore the original conversation.

Note that the method for the user terminal 5 according to the invention can be implemented in hardware and / or software. In the case of software, the user terminal 5 comprises a processing unit and a memory, which memory is combined with the processing unit. The user terminal 5 may load a computer program implementing the above-described method. After loading the computer program, the processing unit of the user terminal 5 is arranged to execute the program in order to obtain the function as described above.

Similarly, a software program may be used within the network service 3 and / or the call initiation A-terminal 6 to obtain functionality as described above with reference to each of the network service NS and the A-terminal 6. Can be used.

The invention can also be implemented in various applications for the user terminal 5.

In the first CS-based application, the user terminal 5 is arranged to receive the spoken content of the guided tour. The user terminal 5 may be any suitable mobile communication device according to one of the embodiments.

Every time a new content becomes available, the CS-based application initiates a call to the user terminal 5 by means of an additional packet switched signal PS1. Each call is automatically answered without user interaction in accordance with one or more embodiments described above.

In another application, the user terminal 5 is arranged to have the function of a baby telephone. The user terminal 5 may for example be located in a room with a child, such as a baby or an infant. Any call to the user terminal 5 results in a connection to record the sound from the room. The call automatically includes an additional packet switched signal PS1 to respond to the call and may also include instructions for a silent warning pattern.

The baby telephone is implemented by any one of the embodiments of the user terminal as described above, the user terminal comprising at least a CS-phone device CS0 for processing the CS-based telephone signals CS1, CS2. Arranged for communication over a communication network, CS-based telephone signals are received and transmitted via circuit switched bearer services. The user terminal is arranged to receive an additional response-related signal PS1; CS3, which is related to the introduction CS-warning signal CS1 of the introduction call. In addition, the user terminal is arranged to transmit a response signal or CS-response signal CS2 via the circuit switched bearer service in response to the information contained in or derived from the additional response-related signal.

In additional applications, the present invention provides a network-induced call hold as described above. The A-terminal 6 calls the user terminal 5 of the present invention. The user terminal is busy on a call to another terminal. A-terminal 6 is privileged to intervene in an ongoing call as described above. The user of the A-terminal receives a "busy" signal and commands on the A-terminal 6, causing the user terminal 5 to hold another call and to connect to the A-terminal in voice communication. The command triggers the generation of an additional packet switched signal PS1, which causes the user terminal 5 to respond to the A-terminal 6 when PS1 is received. The other call is holding. The message can be shown to the party of another call that the call is holding.

In another application, the present invention provides a network-induced "call hold" as described above. The A-terminal 6 calls the user terminal 5 of the present invention. The user terminal 5 is busy on another call to another terminal. The A-terminal 6 is granted the privilege to "intercept" the ongoing call as described above. In this case, no user interaction is required on the A-terminal. The busy signal is not sent to the party of the A-terminal 6. The additional packet switched signal PS1 can be sent directly with the call setup signal or can be generated by the network service NS when a busy signal is detected for the user terminal 5. The user terminal 5 responds to the A-terminal 6 and the other call is in the "hold" state. The message may exist at the party of another call with the call "hold".

Although specific embodiments of the invention have been described, it should be understood that the embodiments do not limit the invention. The invention is limited only by the scope of the appended claims, and any additional alternatives, modifications, or equivalents.

Claims (20)

In a user terminal 5 for communication via a telecommunications network 3, comprising at least a CS-telephone device CS0 for processing CS-based telephone signals CS1, CS2. The CS-based telephone signal is received and transmitted via a circuit switched bearer service; The user terminal is arranged to receive an additional response-related signal PS1 within a predetermined time interval, The additional response-related signal comprises an additional packet switched signal PS1 via a packet switched bearer service, The additional response-related signal is related to the introduction CS-warning signal CS1 of the introduction call; The user terminal is arranged to transmit a response signal or a CS-response signal CS2 via the circuit switched bearer service in response to information included in or derived from the additional response-related signal; , The user terminal comprises a packet switched data processing apparatus PS0 for receiving the additional packet switched signal PS1 via the packet switched bearer service, wherein the additional packet switched signal PS1 is an introduction of an introduction call. Relating to the CS-warning signal CS1 and containing information on the introduction call, The user terminal is arranged to transmit a response signal or a CS-response signal CS2 via the circuit switched bearer service in response to information included in and derived from the additional packet switched signal, The CS-telephone apparatus CS0 includes a finite state machine FSM that responds to information from the additional packet switched signal PS1 while the finite state machine is brought into an active state 30 for the introduction call. Change the state 20 of the user terminal and are arranged to transmit the CS-response signal CS2, The packet switched data processing apparatus PS0 comprises a processing application HA for processing a packet switched signal, which processing information receives an information signal ACS; HS; RS from the additional packet switched signal PS1. Can be derived; An output of the processing application is connected to an input of the finite state machine (FSM) to send the information signal to the finite state machine; The finite state machine is arranged to receive the information signal and to change its state (20) in accordance with the received information signal. delete delete delete The method of claim 1, The information signal is held such that the finite state machine (FSM) changes the active state 30 of another ongoing call to hold state 45 (H1) and places the introduction call in active state 30 (H2). User terminal for communication via a telecommunications network, characterized in that the signal (HS). 6. The method of claim 5, The finite state machine FSM is arranged to provide an allowance signal A2 to the CS-telephone apparatus CS0, which is also a terminal of another ongoing call and a terminal 6 of the incoming call. And at least one arranged to transmit a message relating to a change in call state (30,45) for each of the ongoing call and the introduction call. The method of claim 1, The information signal is a ring delay signal RS which causes the finite state machine FSM to change to the " active " state 30 for the introduction call and to determine the time interval for sending the CS-response signal CS2. User terminal for communication via a telecommunications network, characterized in that). The method of claim 1, The user terminal 5 comprises an additional device D0 for providing at least one locally executable application, the additional output of the processing application HA is connected to the input of the additional device, The processing application is arranged to extract the invitation signal IS1 from the additional packet switched signal PS1 and to transmit the invitation signal to the additional device. . 9. The method of claim 8, The additional device D0 is: Is processed by at least one locally executable application of the invitation signal IS1 to indicate information related to the introduction call to the user terminal 5; Receive a user feedback signal FS; An additional feedback signal (SF) is arranged to be transmitted via said packet switched bearer service. 10. The method of claim 9, The CS-phone based device CS0 is arranged to receive an additional line based signal CS3 in response to the transmission of the feedback signal SF; The finite state machine (FSM) is arranged to change its state to the " active " state 30 for the introduction call in response to receiving the additional circuit switched signal. User terminal for communication. delete delete In the communication method via the telecommunications network (3), Processing the CS-based telephone signals CS1, CS2 received or transmitted via a circuit switched bearer service; Receiving an additional response-related signal PS1 related to the introduction CS-warning signal CS1 of the introduction call, wherein the additional response-related signal is transmitted via a packet switched bearer service. Receiving; And Sending a response signal or a CS-response signal CS2 over the circuit switched bearer service in response to information included in or derived from the additional response-related signal, Processing the additional response-related signal PS1; Deriving an information signal (ACS; HS; RS) from the additional response related signal (PS1; CS3); And Changing the state for an introduction call in accordance with said derived information signal, The method is responsive to the information signal HS: Changing the active state 30 of the other ongoing call to the hold state 45 (H1); Placing the introduction call in an active state 30 (H2); And -Sending a message regarding a change in call state (30, 45) to the terminal of the other ongoing call and / or to the terminal (6) of the incoming call. Way. delete delete delete In the communication method via the telecommunications network (3), Processing the CS-based telephone signals CS1, CS2 received or transmitted via a circuit switched bearer service; Receiving an additional response-related signal PS1 related to the introduction CS-warning signal CS1 of the introduction call, wherein the additional response-related signal is transmitted via a packet switched bearer service. Receiving; And Sending a response signal or a CS-response signal CS2 over the circuit switched bearer service in response to information included in or derived from the additional response-related signal, Extracting an invitation signal IS1 from said additional response-related signal PS1; Processing the invitation signal IS1 to present information related to the introduction call to a user; Receiving a user feedback signal FS; Allowing an additional feedback signal (SF) to be transmitted in response to the received user feedback signal; And Receiving an additional circuit switched signal (CS3) in response to the transmission of said feedback signal (SF). A computer-readable recording medium comprising a computer program for operating as a user terminal (5) according to any one of claims 1 to 5. delete delete

Images